CNETAnalysis: Windows 8 has been getting a bit of a rough ride lately, and even Microsoft’s friends have been at it: Asus’s chief financial officer, David Chang, told reporters that “demand for Windows 8 is not that good right now”. That’s not what Steve Ballmer says: according to him, Windows 8 is doing enormous numbers. By enormous, we really do mean enormous: Windows 8 has sold 40 million licences in just one month, and upgrade sales are higher than they were for Windows 7 . Not only that, but Steve Ballmer says that Windows Phone sales are four times higher than they were last year , that there are more than 1,500 different Windows 8 PCs, and that the Windows Phone Store has more than 120,000 apps. And that’s numberwang! Hold your horses, says our columnist Gary Marshall: what do these numbers actually mean? Windows Phone sales may be four times larger, but four times larger than what? “If you ask Steve B...